// vue.config.js
"use strict"
const path = require("path")
const defaultSettings = require("./src/settings.js")
const HtmlWebpackPlugin = require("html-webpack-plugin")

function resolve (dir) {
  return path.join(__dirname, dir)
}

const name = defaultSettings.title// page title

// If your port is set to 80,
// use administrator privileges to execute the command line.
// For example, Mac: sudo npm run
// You can change the port by the following methods:
// port = 9528 npm run dev OR npm run dev --port = 9528
const port = process.env.port || process.env.npm_config_port || 9528 // dev port

// All configuration item explanations can be find in https://cli.vuejs.org/config/
module.exports = {
  /**
   * You will need to set publicPath if you plan to deploy your site under a sub path,
   * for example GitHub Pages. If you plan to deploy your site to https://foo.github.io/bar/,
   * then publicPath should be set to "/bar/".
   * In most cases please use '/' !!!
   * Detail: https://cli.vuejs.org/config/#publicpath
   */
  publicPath: "/",
  // outputDir: "dist",
  // assetsDir: "static",
  lintOnSave: process.env.NODE_ENV === "development",
  productionSourceMap: false,
  devServer: {
    port: port,
    open: true,
    overlay: {
      warnings: false,
      errors: true,
    },
    proxy: {
      // change xxx-api/login => mock/login
      // detail: https://cli.vuejs.org/config/#devserver-proxy
      "/api": {
        target: "http://localhost:3000", // 测试
        changeOrigin: true,
      }
    },
  },
  configureWebpack: {
    // provide the app's title in webpack's name field, so that
    // it can be accessed in index.html to inject the correct title.
    // name: name,
    resolve: {
      alias: {
        "@": resolve("src"),
        public: resolve("public"),
      },
    },
    plugins: [
      new HtmlWebpackPlugin({
        title: name,
        favicon: "",
        template: "./public/index.html",
      }),
    ],
  },
  chainWebpack (config) {
    config.plugins.delete("preload") // TODO: need test
    config.plugins.delete("prefetch") // TODO: need test

    // set svg-sprite-loader
    config.module
      .rule("svg")
      .exclude.add(resolve("src/icons"))
      .end()
    config.module
      .rule("icons")
      .test(/\.svg$/)
      .include.add(resolve("src/icons"))
      .end()
      .use("svg-sprite-loader")
      .loader("svg-sprite-loader")
      .options({
        symbolId: "icon-[name]",
      })
      .end()

    // set preserveWhitespace
    config.module
      .rule("vue")
      .use("vue-loader")
      .loader("vue-loader")
      .tap((options) => {
        options.compilerOptions.preserveWhitespace = true
        return options
      })
      .end()

    config
      // https://webpack.js.org/configuration/devtool/#development
      .when(process.env.NODE_ENV === "development", (config) => config.devtool("cheap-source-map"))

    // config.when(process.env.NODE_ENV !== "development", (config) => {
    //   config
    //     .plugin("ScriptExtHtmlWebpackPlugin")
    //     .after("html")
    //     .use("script-ext-html-webpack-plugin", [
    //       {
    //         // `runtime` must same as runtimeChunk name. default is `runtime`
    //         inline: /runtime\..*\.js$/,
    //       },
    //     ])
    //     .end();
    //   config.optimization.splitChunks({
    //     chunks: "all",
    //     cacheGroups: {
    //       libs: {
    //         name: "chunk-libs",
    //         test: /[\\/]node_modules[\\/]/,
    //         priority: 10,
    //         chunks: "initial", // only package third parties that are initially dependent
    //       },
    //       elementUI: {
    //         name: "chunk-elementUI", // split elementUI into a single package
    //         priority: 20, // the weight needs to be larger than libs and app or it will be packaged into libs or app
    //         test: /[\\/]node_modules[\\/]_?element-ui(.*)/, // in order to adapt to cnpm
    //       },
    //       commons: {
    //         name: "chunk-commons",
    //         test: resolve("src/components"), // can customize your rules
    //         minChunks: 3, //  minimum common number
    //         priority: 5,
    //         reuseExistingChunk: true,
    //       },
    //     },
    //   });
    //   config.optimization.runtimeChunk("single");
    // });
  },
}
